The photon veto system for the NA62 rare kaon decay experiment

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• 作者：Stefano Venditti
• 关键词：Veto system ; NA62 ; Rare decay
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2010
• 出版时间：11 May 2010-21 May 2010
• 年：2010
• 卷：617
• 期：1-3
• 页码：436-438
• 全文大小：519 K

文摘

Three possible solutions for a system of large-angle vetoes (LAV) have been analyzed and tested in order to choose the best option for the NA62 experiment, expected to take data in 2011/12 at CERN. The rejection power assured by the veto system, whose goal is mainly to veto photons from the K⁺→π⁺π⁰ and K⁺→π⁺π⁰π⁰ decays, is a key-point to collect 100 events of the decay (BR10^-10) with a total background (BG) of the order of 10 % , thus providing a very stringent test of the Standard Model (SM) and a measurement of the V_td element of the Cabibbo–Kobayashi–Maskawa (CKM) matrix. The details of this study and the final decision taken will be reviewed in this paper.